Many times it happens that the hacked index.htm pages are uploaded by hackers under
all account's hosted on the server and one has to either remove or rename those hacked
index.htm pages and it becomes very difficult to rename all hacked index.htm pages one
by one if there are many accounts hosted on the affected server. So, if you come accross the same situation then don't panic just use the below
command to rename all hacked index.htm pages to index.htm-hacked